21005208

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:677

約数の個数: 96

約数和(自身を含む): 66044160

約数和(自身を除く): 45038952

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 71, 72, 84, 126, 142, 168, 213, 252, 284, 426, 497, 504, 568, 587, 639, 852, 994, 1174, 1278, 1491, 1704, 1761, 1988, 2348, 2556, 2982, 3522, 3976, 4109, 4473, 4696, 5112, 5283, 5964, 7044, 8218, 8946, 10566, 11928, 12327, 14088, 16436, 17892, 21132, 24654, 32872, 35784, 36981, 41677, 42264, 49308, 73962, 83354, 98616, 125031, 147924, 166708, 250062, 291739, 295848, 333416, 375093, 500124, 583478, 750186, 875217, 1000248, 1166956, 1500372, 1750434, 2333912, 2625651, 3000744, 3500868, 5251302, 7001736, 10502604, 21005208]

約数ペア:

[(1, 21005208), (2, 10502604), (3, 7001736), (4, 5251302), (6, 3500868), (7, 3000744), (8, 2625651), (9, 2333912), (12, 1750434), (14, 1500372), (18, 1166956), (21, 1000248), (24, 875217), (28, 750186), (36, 583478), (42, 500124), (56, 375093), (63, 333416), (71, 295848), (72, 291739), (84, 250062), (126, 166708), (142, 147924), (168, 125031), (213, 98616), (252, 83354), (284, 73962), (426, 49308), (497, 42264), (504, 41677), (568, 36981), (587, 35784), (639, 32872), (852, 24654), (994, 21132), (1174, 17892), (1278, 16436), (1491, 14088), (1704, 12327), (1761, 11928), (1988, 10566), (2348, 8946), (2556, 8218), (2982, 7044), (3522, 5964), (3976, 5283), (4109, 5112), (4473, 4696)]